Explosion-motor.



PATENTED. JUNE 7, .1904. GIRARDOT.

' F. GHARRON a L EXPLOSION MOTOR. APPLIOATION FILED un. s, 1903. y'

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` PATENTEO JUNE 7, 1904. IF. OHARRON & L. GIRARDOT.

A.EXPLOSION MOTOR. APPLIOANION ILED NAR. O, 1903.

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F; GHARRQNISL L. GIRARD'GT.

EXPLOSION MOTOR.

PPLIOATION FILED un. 3,-1903.

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UNITED STATES Patented June 7, 1904.

PATENT OFFICE.

FERDINAND CHARRON AND LEONCE GIRARDT, OF PUTEAUX, FRANCE.

EXPLOSION-MOTOR.

SPECIFICATION forming part of Letters Patent No.' 761,656, dated June 7, 1904.

` Application filed March 3, 1903. Serial No. 145,970. (No model.)

To all whom, it may concern.-

Be it known that we, FERDINAND CHARBON and LoNcE GIEARDOT, citizens or the Republic of France, and residents of 7 Rue Ampere, Puteaux, Seine, in the Republic oi' France, have invented certain new and useful Improvements in Explosion-Motors, of which the following is a specification.

This invention relates to improvements in explosion-motors, petrol-motors, and the like for the purpose of producing motors of great lightness, constructed entirely of steel, and easy to mount and to inspect.

The improvements relate more particularly to theconstruction and arrangement of the cylinder and the valve-boxes, to the mounting of the said boxes and their closing-plugs, and to the means of fixing to the various parts of the motor a thin metal casing or jacket intended to form a Water-chamber.

In the accompanying drawings, Figure lis a vertical section of the motor in a plane passing th rough the valve-boxes. Fig. 2 is a plan view. Fig. 3 is an elevation; and Figs. 4, 5, and 6 represent, on a smaller scale, an elevation, a plan view, and a vertical section, respectively, of the motor-cylinder, the vertical section being on the line l 2 of Fig. 5. Fig. 7 is a detail sectional view of the closing device of the valve-boxes at an enlarged scale, and Fig. 8 is a section made through line A B of Fig. 7

The cylinder is'formed of a bored and polished block of cannon-steel, so that the walls can be of very slight thickness, owing to the strength of the metal. The cylinder can also be made of-cast-steel. This cylinder tis only open at the base and is provided at the latter with aflange for iixing it to an ordinary frame b. At its upper-end it has a cover c, integral with the lateral walls, and two cylindrical bosses d and e, diametrically opposite .each other,with screw-threaded outer surfaces. In order to utilize to the fullest possible extent the total height of the cylinder and to avoid `useless weight,'the cover c has a semicylinof the cylinder.

form in all its parts. The cylinder thus obtained is extremely light in proportion to the power which can be developed in it.

The valve-boxes are of cast-steel- One is provided for supply and one for exhaust. These valve-boxes are identical in construction and interchangeable.

ed to be screwed to one of the bosses d and e The joint produced by the screwing alone is su'liiciently tight; but it can be rendered more perfect in a simple manner Without inserting any-special part. For this purpose it is suiiicient to construct the bosses d and e with small ilanges g, Fig. 1, round their inner circumference, to provide corresponding recesses i in the valve-boxes, and then to expand the flanges g after the valveboxes have been screwed to the cylinder.

I This is rendered possible by means of aper- The aperture in the wall ofv 4 Each valve-box is i i provided with a screw-threaded boss f, adapt- The removal of the said screw-covers is very easy and can be effected instantaneously.

For this purpose acollarvz, with two projecting knob-headed studs 0 and p, is adapted to be screwed ixedly to the flange surrounding the aperture m. A cross-bar g is connected by a screw r at its center with the cover or plug c, as shown in Fig. 1. The ends of the crossbar g are adapted to engage the studs 0 and p, respectively. If the screw r is screwed downward While the cross-bar is in engagement with the said studs, t-he screw presses the plug or cover `firmly onto its seat and makes a gas-tight joint. For removing the plug it is suiicien't to loosen slightly the screw r and then rotate ,the cross-bar out of engagement With the studs 0 and p, whereupon the said the plug, the latter being connected to the crossebar by means of the screw fr and a nut f1", engaging' a plate e, fixed to the plug.

'The casing which surrounds the cylinder and the valve-boxesand in which the coolingwater circulates consists of a copper jacket xed at its lower end directly to the circumference of the cylinder and at its upper end to the valve-boxes. This jacket is preferably T-shaped and arranged with its vertical part surrounding the body of the cylinder and its horizontal part u surrounding the upper end of the cylinder-bottom and the valveleoxes. The part uis not cylindrical, but has a flattened upper surface. This jacket u is provided with openings for'the valves and valve-rods and the like and is soldered or otherwise fixed to the cylinder and the valveboxes at the parts marked s in Figs. l and 2. l The two valves .fc and y for supply and exhaust, respectively, are automatically operl ated by cams 1 and 2, fixed at an angle of one hundred and eighty degrees to each other to parallel shafts 3 and 4, respectively. The said shafts 3 and 4 revolve with equal speed and are driven by the main shaft 5 by means of gear-wheels. The rods 7 and 8, which the said cams operate, have rollers 9 and 10 at their lower ends and are guided in vertical tubes, as shown in the drawings.

In using this type of motor with motor-cars several coupled cylinders will preferably be employed, more particularly four cylinders placed in line, with their pistons acting on the same shaft. The cam-shafts will in this case be common to all the cylinders, and a common feed and exhaust pipe will be provided.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, isw

l. An explosion-motor,comprising a hollow steel cylinder@ open at one end, two hollow lateral screw-threaded bosses (Z e at its upper end, the said bosses being diametrieally opposite each other and integral with the cylinder, and a flange g at the end of each of the said bosses, in combination with two caststeel valve-boxes identical with each other, a hollow screw-thread ed bossfcast with each Valvebox adapted to be screwed to one of the bosses d and e of the cylinder, a recess 71, in each of the bosses f, and an aperture in the wall of each of the said valve-boxes, opposite the respective boss f, substantially as and for the purpose set forth. j

2. An explosion-motor comprising a hollow steel cylinder (t open at one end, two hollow lateral screw-thread ed bosses Z a diametrically opposite each other at the upper end of the cylinder and integral with the latter, and a iange f7 at the end of each of the said bosses e and (l, in combination with two cast-steel valve-boxes identical with each other, a screwthreaded tubular boss f on each of the said Valve-boxes adapted to be screwed tothe cor responding boss of the cylinder, a recess /1/ in each of the bosses f, an aperture in the wall of each of the said valve-boxes opposite the respective boss f, an aperture m in the upper part of each of the said valve-boxes, a collar n adapted to bc screwed to a flange surrounding the said aperture 7n, two knoh-hemled studs 0 and 7) lixed to the said collar n, acrossbar r] with slotted ends adapted to engage the saidA studs in opposite directions, a xingscrew r engaging the said cross-har r] and a plug o connected to the screw fr, substantially as and lfor the purpose set forth.

3. An explosion-motor comprising ahollow steel cylinder c open at one end` two hollow lateral screw-threaded.bosses (l C d iametrically opposite each other at the upper end of the cylinder and integral with the latter, and a flange r/ at the end of each of the said bosses, in combination with two cast-steel val ve-boxes identical with each other, a hollow screwthreaded boss fon each of the said val've-boxes,

adapted to be screwed to the corresponding boss of the cylinder, aT-shaped tubular jacket of thin sheet-copper, surrounding the upper part of cylinder and the valve-boxes, a vertical part t of the said jacket soldered or otherwise fixed to the lower part of the wall ol the steel cylinder itself and a horizontal part u of the'said jacket soldered or otherwise fixed to the circumferences of the valve-boxes, substantially as and for the purpose set forth.

1n witness whereof we have hereunto set our hands in presence of two witnesses.

FERDINAND CHARRON. LEONCE GIRARDOT.

Witnesses:

ANTOINE LAvoIx, J. ALLIsoN BowuN. 

